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/*
* arch/ppc64/kernel/ppc_asm.h
*
* Definitions used by various bits of low-level assembly code on PowerPC.
*
* Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _PPC64_PPC_ASM_H
#define _PPC64_PPC_ASM_H
/*
* Macros for storing registers into and loading registers from
* exception frames.
*/
#define SAVE_GPR(n, base) std n,GPR0+8*(n)(base)
#define SAVE_2GPRS(n, base) SAVE_GPR(n, base); SAVE_GPR(n+1, base)
#define SAVE_4GPRS(n, base) SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
#define SAVE_8GPRS(n, base) SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
#define SAVE_10GPRS(n, base) SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
#define REST_GPR(n, base) ld n,GPR0+8*(n)(base)
#define REST_2GPRS(n, base) REST_GPR(n, base); REST_GPR(n+1, base)
#define REST_4GPRS(n, base) REST_2GPRS(n, base); REST_2GPRS(n+2, base)
#define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base)
#define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base)
#define SAVE_NVGPRS(base) SAVE_8GPRS(14, base); SAVE_10GPRS(22, base)
#define REST_NVGPRS(base) REST_8GPRS(14, base); REST_10GPRS(22, base)
#define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*(n)(base)
#define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base)
#define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
#define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
#define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
#define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
#define REST_FPR(n, base) lfd n,THREAD_FPR0+8*(n)(base)
#define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base)
#define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base)
#define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base)
#define REST_16FPRS(n, base) REST_8FPRS(n, base); REST_8FPRS(n+8, base)
#define REST_32FPRS(n, base) REST_16FPRS(n, base); REST_16FPRS(n+16, base)
#define SAVE_VR(n,b,base) li b,THREAD_VR0+(16*(n)); stvx n,b,base
#define SAVE_2VRS(n,b,base) SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
#define SAVE_4VRS(n,b,base) SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base)
#define SAVE_8VRS(n,b,base) SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base)
#define SAVE_16VRS(n,b,base) SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base)
#define SAVE_32VRS(n,b,base) SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base)
#define REST_VR(n,b,base) li b,THREAD_VR0+(16*(n)); lvx n,b,base
#define REST_2VRS(n,b,base) REST_VR(n,b,base); REST_VR(n+1,b,base)
#define REST_4VRS(n,b,base) REST_2VRS(n,b,base); REST_2VRS(n+2,b,base)
#define REST_8VRS(n,b,base) REST_4VRS(n,b,base); REST_4VRS(n+4,b,base)
#define REST_16VRS(n,b,base) REST_8VRS(n,b,base); REST_8VRS(n+8,b,base)
#define REST_32VRS(n,b,base) REST_16VRS(n,b,base); REST_16VRS(n+16,b,base)
/* Macros to adjust thread priority for Iseries hardware multithreading */
#define HMT_LOW or 1,1,1
#define HMT_MEDIUM or 2,2,2
#define HMT_HIGH or 3,3,3
/* Insert the high 32 bits of the MSR into what will be the new
MSR (via SRR1 and rfid) This preserves the MSR.SF and MSR.ISF
bits. */
#define FIX_SRR1(ra, rb) \
mr rb,ra; \
mfmsr ra; \
rldimi ra,rb,0,32
#define CLR_TOP32(r) rlwinm (r),(r),0,0,31 /* clear top 32 bits */
/*
* LOADADDR( rn, name )
* loads the address of 'name' into 'rn'
*
* LOADBASE( rn, name )
* loads the address (less the low 16 bits) of 'name' into 'rn'
* suitable for base+disp addressing
*/
#define LOADADDR(rn,name) \
lis rn,name##@highest; \
ori rn,rn,name##@higher; \
rldicr rn,rn,32,31; \
oris rn,rn,name##@h; \
ori rn,rn,name##@l
#define LOADBASE(rn,name) \
lis rn,name@highest; \
ori rn,rn,name@higher; \
rldicr rn,rn,32,31; \
oris rn,rn,name@ha
#define SET_REG_TO_CONST(reg, value) \
lis reg,(((value)>>48)&0xFFFF); \
ori reg,reg,(((value)>>32)&0xFFFF); \
rldicr reg,reg,32,31; \
oris reg,reg,(((value)>>16)&0xFFFF); \
ori reg,reg,((value)&0xFFFF);
#define SET_REG_TO_LABEL(reg, label) \
lis reg,(label)@highest; \
ori reg,reg,(label)@higher; \
rldicr reg,reg,32,31; \
oris reg,reg,(label)@h; \
ori reg,reg,(label)@l;
/* PPPBBB - DRENG If KERNELBASE is always 0xC0...,
* Then we can easily do this with one asm insn. -Peter
*/
#define tophys(rd,rs) \
lis rd,((KERNELBASE>>48)&0xFFFF); \
rldicr rd,rd,32,31; \
sub rd,rs,rd
#define tovirt(rd,rs) \
lis rd,((KERNELBASE>>48)&0xFFFF); \
rldicr rd,rd,32,31; \
add rd,rs,rd
/* Condition Register Bit Fields */
#define cr0 0
#define cr1 1
#define cr2 2
#define cr3 3
#define cr4 4
#define cr5 5
#define cr6 6
#define cr7 7
/* General Purpose Registers (GPRs) */
#define r0 0
#define r1 1
#define r2 2
#define r3 3
#define r4 4
#define r5 5
#define r6 6
#define r7 7
#define r8 8
#define r9 9
#define r10 10
#define r11 11
#define r12 12
#define r13 13
#define r14 14
#define r15 15
#define r16 16
#define r17 17
#define r18 18
#define r19 19
#define r20 20
#define r21 21
#define r22 22
#define r23 23
#define r24 24
#define r25 25
#define r26 26
#define r27 27
#define r28 28
#define r29 29
#define r30 30
#define r31 31
/* Floating Point Registers (FPRs) */
#define fr0 0
#define fr1 1
#define fr2 2
#define fr3 3
#define fr4 4
#define fr5 5
#define fr6 6
#define fr7 7
#define fr8 8
#define fr9 9
#define fr10 10
#define fr11 11
#define fr12 12
#define fr13 13
#define fr14 14
#define fr15 15
#define fr16 16
#define fr17 17
#define fr18 18
#define fr19 19
#define fr20 20
#define fr21 21
#define fr22 22
#define fr23 23
#define fr24 24
#define fr25 25
#define fr26 26
#define fr27 27
#define fr28 28
#define fr29 29
#define fr30 30
#define fr31 31
#define vr0 0
#define vr1 1
#define vr2 2
#define vr3 3
#define vr4 4
#define vr5 5
#define vr6 6
#define vr7 7
#define vr8 8
#define vr9 9
#define vr10 10
#define vr11 11
#define vr12 12
#define vr13 13
#define vr14 14
#define vr15 15
#define vr16 16
#define vr17 17
#define vr18 18
#define vr19 19
#define vr20 20
#define vr21 21
#define vr22 22
#define vr23 23
#define vr24 24
#define vr25 25
#define vr26 26
#define vr27 27
#define vr28 28
#define vr29 29
#define vr30 30
#define vr31 31
#endif /* _PPC64_PPC_ASM_H */
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